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| Champilou, Jean-baptiste; Baltzer, Agnes; Murat, Anne; Reynaud, Marine; Maillet, Grégoire M.; Nardelli, Maria Pia; Metzger, Édouard. |
| In the shallow waters of the Bay of Concarneau (South Brittany, France), previous studies reported a dense settlement of the species Haploops (tube-dwelling bioengineer amphipod) that perfectly overlaps a field of pockmarks. A possible mechanistic link may therefore exist between the Haploops colonies and the shallow pockmarks. To test this hypothesis, interferometry sonar and sub-bottom profiler chirp data were acquired in two new areas located in the marine estuary of the Loire River, “La Lambarde” and “Le Croisic”. The new sites share the same sedimentary and geological characteristics as those found in the Bay of Concarneau. The three sites are similarly located in shallow and muddy environments above a faulted Middle Eocene formation that is incised... |
| Tipo: Text |
Palavras-chave: Shallow waters; South Brittany (France); Geophysics; Pockmarks; Haploops. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00502/61324/64896.pdf |
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| Fossile, Eleonore; Nardelli, Maria Pia; Jouini, Arbia; Lansard, Bruno; Pusceddu, Antonio; Moccia, Davide; Michel, Elisabeth; Péron, Olivier; Howa, Hélène; Mojtahid, Meryem. |
| The rapid response of benthic foraminifera to environmental factors (e.g., organic matter quality and quantity, salinity, pH) and their high fossilisation potential make them promising bio-indicators for the intensity and recurrence of brine formation in Arctic seas. Such approach, however, requires a thorough knowledge of their modern ecology in such extreme settings. To this aim, seven stations along a N–S transect across the Storfjorden (Svalbard archipelago) have been sampled using an interface multicorer. This fjord is an area of intense sea ice formation characterised by the production of Brine-enriched Shelf Waters (BSW) as a result of a recurrent latent-heat polynya. Living (Rose Bengal stained) foraminiferal assemblages were analysed together with... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00599/71122/69424.pdf |
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